1/* 2 * linux/include/asm-arm/arch-rpc/system.h 3 * 4 * Copyright (C) 1996-1999 Russell King. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10#include <asm/arch/hardware.h> 11#include <asm/hardware/iomd.h> 12#include <asm/io.h> 13 14static void arch_idle(void) 15{ 16 unsigned long start_idle; 17 18 start_idle = jiffies; 19 20 do { 21 if (current->need_resched || hlt_counter) 22 goto slow_out; 23 cpu_do_idle(IDLE_WAIT_FAST); 24 } while (time_before(jiffies, start_idle + HZ/50)); 25 26 cpu_do_idle(IDLE_CLOCK_SLOW); 27 28 while (!current->need_resched && !hlt_counter) { 29 cpu_do_idle(IDLE_WAIT_SLOW); 30 } 31 32 cpu_do_idle(IDLE_CLOCK_FAST); 33slow_out: 34} 35 36static inline void arch_reset(char mode) 37{ 38 iomd_writeb(0, IOMD_ROMCR0); 39 40 /* 41 * Jump into the ROM 42 */ 43 cpu_reset(0); 44} 45